反应详情

A solution of 2-chloro-6-bromoquinoline (4.0 g) in methanol (20 cm3) was heated under reflux with sodium methoxide [made from sodium (0.5 g) and methanol (20 cm3)] for 16 hours. The solvent was removed in vacuo and the residue was partitioned, between water (20 cm3) and chloroform (100 cm3). The aqueous phase was extracted wth chloroform (2×30 cm3) and the dried (MgSO4) organic extracts were evaporated to give a solid which was recrystallised from petroleum ether (b.p. 60°-80°) to yield the title compound, m.p. 93°-96°, (3.0 g).

1. customThe solvent was removed in vacuo
2. customthe residue was partitioned, between water (20 cm3) and chloroform (100 cm3)
3. extractionThe aqueous phase was extracted wth chloroform (2×30 cm3)
4. dry with materialthe dried (MgSO4) organic extracts
5. customwere evaporated
6. customto give a solid which
7. customwas recrystallised from petroleum ether (b.p. 60°-80°)